linux-kernel - Re: [PATCH 13/33] arm_mpam: Add MPAM MSC register layout definitions

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Message-ID: <29f46ae0-1265-42e6-a8e4-7d9fba9a35b5@arm.com>
Date: Mon, 8 Sep 2025 18:57:45 +0100
From: James Morse <james.morse@....com>
To: Ben Horgan <ben.horgan@....com>, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-acpi@...r.kernel.org,
 devicetree@...r.kernel.org
Cc: shameerali.kolothum.thodi@...wei.com,
 D Scott Phillips OS <scott@...amperecomputing.com>,
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 bobo.shaobowang@...wei.com, tan.shaopeng@...itsu.com,
 baolin.wang@...ux.alibaba.com, Jamie Iles <quic_jiles@...cinc.com>,
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 David Hildenbrand <david@...hat.com>, Rex Nie <rex.nie@...uarmicro.com>,
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 <guohanjun@...wei.com>, Sudeep Holla <sudeep.holla@....com>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Catalin Marinas <catalin.marinas@....com>,
 Will Deacon <will@...nel.org>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Danilo Krummrich <dakr@...nel.org>
Subject: Re: [PATCH 13/33] arm_mpam: Add MPAM MSC register layout definitions

Hi Ben,

On 29/08/2025 09:42, Ben Horgan wrote:
> On 8/22/25 16:29, James Morse wrote:
>> Memory Partitioning and Monitoring (MPAM) has memory mapped devices
>> (MSCs) with an identity/configuration page.
>>
>> Add the definitions for these registers as offset within the page(s).

>> diff --git a/drivers/resctrl/mpam_internal.h b/drivers/resctrl/mpam_internal.h
>> index d49bb884b433..6e0982a1a9ac 100644
>> --- a/drivers/resctrl/mpam_internal.h
>> +++ b/drivers/resctrl/mpam_internal.h
>> @@ -150,4 +150,270 @@ extern struct list_head mpam_classes;

>> +/* MPAMF_PARTID_NRW_IDR - MPAM PARTID narrowing ID register */
>> +#define MPAMF_PARTID_NRW_IDR_INTPARTID_MAX      GENMASK(15, 0)
> 
> nit: spaces used instead of tabs

Fixed,

~

> The names and values match the specification.
> 
> Reviewed-by: Ben Horgan <ben.horgan@....com>

Thanks!

James